S10 T5WC 5 Speed Input Shaft Swap Kit 

Part # T5WC-S10K

Includes these pieces for swap:

21 tooth input shaft with 10 spline x 1.125" diameter

Input shaft bearing & race pressed on 

Short style GM retainer with seal installed

Carbon Fiber lined 4th gear synchronizer ring 

Shim kit for input shaft

This is what you need to replace your Saginaw,Muncie or Super T10 

with a modern T5 World Class from the very popular S10

The shaft does not require any machine work to fit a factory 

GM bell housing, 10 spline GM clutch disc or .590" diameter pilot bearing